Organic Chemistry
12th Edition
ISBN: 9781118875766
Author: T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder
Publisher: WILEY
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Chapter 8, Problem 18PP
Interpretation Introduction
Interpretation:
The synthesis of the 7,7-dibromobicyclo[4.1.0]heptane is to be outlined.
Concept Introduction:
Substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon, or a
Elimination reaction: A reaction in which two substituent groups are detached and a double bond is formed, is called an elimination reaction.
Addition reaction: It is the reaction in which unsaturated bonds are converted to saturated bonds by addition of molecules.
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• PRACTICE PROBLEM 8.18 Starting with cyclohexene and using any other needed reagents, outline a synthesis of
7,7-dibromobicyclo[4.1.0]heptane.
O PRACTICE PROBLEM 8.14
Starting with any needed alkene (or cycloalkene) and assuming you have deuterioace-
tic acid (CH3CO,D) available, outline syntheses of the following deuterium-labeled
compounds.s el en
olad lo nohibbs ad
CH3
(a) (CH3)2CHCH2CH,D
(b) (CH3),CHCHDCH3 (c)
(+ enantiomer)
(d) Assuming you also have available BD3:THF and CH3CO2T, can you suggest a
synthesis of the following?
hab erl
(+ enantiomer)he
imo
(nwond-ben)
CH3
H.
(asoholea)
• PRACTICE PROBLEM 8.12
Treating a hindered alkene such as 2-methyl-2-butene with BH3:THE leads to the for-
mation of a dialkylborane instead of a trialkylborane. When 2 mol of 2-methyl-2-butene
is added to 1 mol of BH3, the product formed is bis(3-methyl-2-butyl)borane, nicknamed
in
reagent
"disiamylborane." Write its structure. Bis(3-methyl-2-butyl)borane is a useful
certain syntheses that require a sterically hindered borane. (The name “disiamyl" comes
from "disecondary-iso-amyl," a completely unsystematic and unacceptable name. The
name "amyl" is an old common name for a five-carbon alkyl group.) donby
Chapter 8 Solutions
Organic Chemistry
Ch. 8 - Prob. 1PPCh. 8 - Prob. 2PPCh. 8 - Practice Problem 8.3 Provide mechanistic...Ch. 8 - Prob. 4PPCh. 8 - Prob. 5PPCh. 8 - Prob. 6PPCh. 8 - Prob. 7PPCh. 8 - Prob. 8PPCh. 8 - Prob. 9PPCh. 8 - Prob. 10PP
Ch. 8 - Prob. 11PPCh. 8 - Prob. 12PPCh. 8 - Practice Problem 8.13
Specify the appropriate...Ch. 8 - Prob. 14PPCh. 8 - Practice Problem 8.15 Write a mechanism to explain...Ch. 8 - Prob. 16PPCh. 8 - Prob. 17PPCh. 8 - Prob. 18PPCh. 8 - Practice Problem 8.19 Treating cyclohexene with l,...Ch. 8 - Prob. 20PPCh. 8 - Practice Problem 8.21
Predict the products of the...Ch. 8 - Prob. 22PPCh. 8 - Prob. 23PPCh. 8 - Prob. 24PPCh. 8 - Prob. 25PPCh. 8 - Write structural formulas for the products that...Ch. 8 - Prob. 27PCh. 8 - Prob. 28PCh. 8 - 8.29. Give the structure of the products that you...Ch. 8 - Give the structure of the products you would...Ch. 8 - Prob. 31PCh. 8 - Prob. 32PCh. 8 - Prob. 33PCh. 8 - Prob. 34PCh. 8 - Prob. 35PCh. 8 - Prob. 36PCh. 8 - Prob. 37PCh. 8 - When 3, 3-dimethyl-2-butanol is neared with...Ch. 8 - Prob. 39PCh. 8 - Prob. 40PCh. 8 - Prob. 41PCh. 8 - Prob. 42PCh. 8 - 8.43. Write a mechanism that explains the...Ch. 8 - 8.44. Write a mechanism for the following...Ch. 8 - Write a mechanism that explains formation of the...Ch. 8 - Prob. 46PCh. 8 - 8.47. Farnesene (below) is a compound found in the...Ch. 8 - Limonene is a compound found in orange oil and...Ch. 8 - Prob. 49PCh. 8 - Synthesize the following compound starting with...Ch. 8 - Predict features of their IR spectra that you...Ch. 8 - Deduce the structures of compounds A, B, and C,...Ch. 8 - Ricinoleic acid, a compound that can be isolated...Ch. 8 - 8.54. There are two dicarboxylic acids with the...Ch. 8 - Prob. 55PCh. 8 - Prob. 56PCh. 8 - Prob. 57PCh. 8 - Prob. 58PCh. 8 - 8.59. For each of the following questions, please...Ch. 8 - Prob. 60PCh. 8 - Prob. 61PCh. 8 - Prob. 62PCh. 8 - Triethylamine, (C2H5)3N, like all amines, has a...Ch. 8 - (a) Synthesize (3S, 4R)-3,...Ch. 8 - Prob. 2LGPCh. 8 - Prob. 3LGPCh. 8 - Prob. 4LGP
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- • PRACTICE PROBLEM 8.13 Specify the appropriate alkene and reagents for synthesis of each of the following alcohols by hydroboration–oxidation. (a) (c) OH (e) CH3 OH AH OH no mobe OH ( (b) (d) (f) OH HT H3 D OH OH HO OHarrow_forward8.30 Outline an efficient synthesis of each of the following compounds from the indicated start- ing material and any necessary organic or inorganic reagents: (a) Cyclopentyl cyanide from cyclopentane (b) Cyclopentyl cyanide from cyclopentene (c) Cyclopentyl cyanide from cyclopentanol (d) NCCH₂CH₂CN from ethyl alcohol (e) Isobutyl iodide from isobutyl chloride (f) Isobutyl iodide from tert-butyl chloride (g) Isopropyl azide from isopropyl alcohol (h) Isopropyl azide from 1-propanol (i) (S)-sec-Butyl azide from (R)-sec-butyl alcohol (i) (S)-CH3CH₂CHCH3 from (R)-sec-butyl alcohol SHarrow_forward4.35 Formulate the reaction of cyclohexene with (i) Br2 and (ii) meta-chloro- peroxybenzoic acid followed by H30+. Show the reaction intermediates and the final products with correct cis or trans stereochemistry. 4.36 What products would you expect to obtain from reaction of cyclohexa- 1,3-diene with each of the following? (a) 1 mol Br2 in CH2C12 (c) 1 mol DCl (D = deuterium, ²H) (b) 1 mol HCl (d) 2 mol H2 over a Pd catalyst 4.37 Predict the products of the following reactions on hex-1-yne: (a) 1 equiv HBr ? (b) 1 equiv Cl2 ? (c) H2, Lindlar catalystarrow_forward
- 8.23 In each of the following indicate which reaction will occur faster. Explain your reasoning. (D) Solvolysis of 1-bromo-2,2-dimethylpropane or tert-butyl bromide in ethanol (E) Solvolysis of isobutyl bromide or sec-butyl bromide in aqueous formic acid (F) Reaction of 1-chlorobutane with sodium acetate in acetic acid or with sodium methoxide in methanolarrow_forwardPractice Problem 7.16 When the compound called isoborneol is heated with 9 M sulfuric acid, the product of the reaction is the compound called camphene and not bornylene, as one might expect. Using models to assist you, write a step-by-step mechanism showing how camphene is formed. HO H,O not heat Isoborneol Camphene Bornylenearrow_forward• PRACTICE PROBLEM 8.24 A, B, and C are alkynes. Elucidate their structures and that of D using the following reaction roadmap. H2, Pt H,, Pt A (C3H14) (C3H14) IR: 3300 cm (1) O3 (2) HOẠC HO, H2, Pt (C3H12) (C3H16) (1) O3 (2) HOAC hol bian vd beeollot Но. ОН AOHarrow_forward
- 4:33 Predict the products of the following reactions. Indicate regioselectivity where relevant. (The aromatic ring is inert to all the indicated reagents.) H2/Pd (a) ? H Br2 (b) HBr (c) ? Styrene KMNO4 NaOH, H2O (d)arrow_forward8. (a) Benzene derivatives exhibit medium to strong absorption in UV-region. Explain why aniline and phenoxide ion have strong UV-absorptions.arrow_forwardPractice Problem 13.36b Problem 13.34 outlines a general method for the preparation of cis- or trans-disubstituted epoxides. Using that method, identify what reagents you would use to prepare the following epoxide from acetylene: H" 'Et The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagent(s) in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A B C D DMP or PCC На, Pt EtBr PHCH2BR E F H H2SO4, H20, HgSO4 МСРВА (RCO3зН) Na, NH3 (/) H2, Lindlar's cat. I K TSCI, py PhBr NANH2 1) EtMgBr; 2) H30+arrow_forward
- 7B. (2 reactions (should clearly indicate the stereochemistry). Draw the structure of the product, substrate or condition in the following (a) ОН (b) Ме 1) OsO4 2) NaHSO3 (c) 1) (sia)2BH 2) NaOH/H2O2 H20arrow_forward8.30 Outline an efficient synthesis of each of the following compounds from the indicated starting material and any necessary organic or inorganic reagents: (g) Isopropyl azide from isopropyl alcohol (h) Isopropyl azide from 1-propanol (i) (S)-sec-butyl azide from (R)-sec-butyl alcoholarrow_forward1) The reaction of (Z)-3-Methyl-3-hexene with H2O/H2SO4 produces 3 – Methyl-3-hexanol (75 % yield)(a) Propose a mechanistic explanation for the reaction.arrow_forward
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